Explain the need of irrigation in India.

The purpose of irrigation:

● The supply of water by irrigation is regular and reliable, where as rainfall is often seasonal or unpredictable.

● Irrigation of crops makes the soil moist, which is required for the germination of seeds.

● Also irrigation loosens the soil and thus helps in elongation and growth of roots. With this, cultivation can be done round the year and during the rainy season only.